Resilient bottom for couches and like furniture



8- 39, 1932- J. KRONHEIM r 1,874,049

RESILIENT BOTTOM FOR COUCHES AND LIKE FURNITURE Filed Nov. 13, L929 2 Sheets-Sheet 1 ATTORN EY Aug. 30, 1932. J. KRONHEI M 1,874,049

RESILIENT BOTTOM FOR COUGHES AND LIKE FURNITURE Filed Nov. 13, 1929 2 Sheets-Sheet 2 INVENTOR Janna Imam/Em (ATTORNEY Patented Aug. 30, 1932 PATENT OFFICE.

JACOB KRONHEIM, OF CLEVELAND, OHIO RESILIENT BOTTOM FOB COUOHES AND LIKE FURNITURE Application filed November 13, 1929. Serial No. 406,805.

The present invention relates to resilient bottoms for davenport couches, chairs, and like furniture, especially upholstered furniture. My general aim and purpose is to provide a strong and stable resilient structure which may be readily upholstered, in which a series of coiled springs are firmly seated and anchored in segregated relation. A further aim and object is to construct a resilient bottom of the kind stated in a simple and expeditious way to minimize labor and reduce costs. These objects are predicated on the use of thin flat strips of metal and their assemblage and construction with other ele- 15 ments to produce the desirable structure herein shown and described and more particular- 1y pointed out in the claim.

In the accompanying drawings, Fig. 1 is a plan View of a resilient bottom for a'chair,

the springs being partly broken away to more clearly disclose the formation and arrangement of the thin fiat strips of metal. Fig. 2 is a sectional view on line 22 of Fig. 1. Fig. 3 is a bottom view of the resilient bottom shown in Fig. 1, and Fig. 1 is an enlarged perspective and sectional view of a part of the resilient bottom shown in Figs. 1 to 3.

The invention comprises an open main frame A. which ordinarily is rectangular in form and constructed of Wood, although it may also be fabricated of'metal. A corrugated or sinuous wire B is secured to the to or upper edge, of this frame, the wire exten I ing the full length of each side member of the frame and being secured in the present instance by staples 2 driven into the wood. Each side member of frame A is also provided with a row of counterbored openings 3 at uniformly spaced intervals lengthwise thereof to receive either pins, bolts or hook memhere 4 and 5, respectively, having heads 6' I adapted to be seated on washers 7 in the larger countcrbored parts of the openings on the outside of the frame. The inner ends of h members 4 and protrude through the frame to permit separate flat strips 8 made of thin metal to be connected therewith. To facilitate making such connections, and to provide a strong and durable connection in a simple 6 and inexpensive way, the opposite ends of each strip are folded back to provide double ply end portions and loops 99 within which a short piece of wire 10 is confined, thereby reenforcing the strips at their opposite ends where the pulling strains are centered. Vertical openings 11 are also provided in the double ply portions 9-9 to permit a hooked connection to be effected, either directly with hook members 4., or with short coiled springs 12 attached to the perforated pins or bolts 5. no

The strips 8 are relatively wide, that is, they are preferably two to three inches in width, depending upon the base diameter of the coiled springs S which are to be seated immovably thereon when screw-connected with two such strips extending at right angles in overlapping relation. Thus a plural number of these thin fiat metal strips extend parallelly from the front rail 14 to the rear rail 15 of frame A, and another set extend longitudinally of the frame at right angles to the first set, the separate sets of strips being interlaced at their intersecting and crossing places to better support each other. Moreover, the open base loop 16 of each spring is interfretted spirally with each strip 8 where crossed and interlaced with a second strip, thus tieing the interlaced strips firmly tow gether and distributing the load on spring S to both sets of strips, and also anchoring the base part of the spring in an immovable position upon the interlaced structure. Therefore, the springs cannot be displaced laterally nor disconnected, except by unscrewing the same. This cannot 'be accomplished after the springs are tied together by twine or cord, following the usual practice in upholstering.- Tying of-the springs to frame A by twine or cord C places the springs under tension, andthat operation is greatly expedit- 9 ed by employing the corrugated wire B hereinbefore described.

Strips 8 may be made of tin or other noncorrosive metal, preferably of thin gauge so that the strip may be easily flexed or bent; and a metal strip having spring qualities or characteristics may also be used. The use of relatively wide strips 8, as determined by the diameter of the open-ended base of the spiral spring, effects tight interloc (ing be- 9 tween the parts and a rigid seat for each spring, inasmuch as each of the two interlocked strips are bent or flexed-more or less abruptly to seat over or under the wire base loop of the spring. The bends in the strip are closely adjacent the interlaced or overlapping areas of the strips, and two arcuate sectors of the base loop of the spring pass underneath the bottom strip, and two additional arcuate sectors of the same loop pass over and seat upon the top strip. The angular open spaces a which remain uncovered or closed Within the circle bounded by the base loop of the spring are relatively small, thus leaving very littleroom or space for the base loop of the spring to shift laterally, especially when the bent formation of the strips at these places is taken into consideration. The straight sharp edges of the flat strips Where they engage theround wire of the base loop of the spring further foster tight locking of the parts together,

What I claim, is:

In a resilient bottom for couches and'like furniture including av frame and a flexible base member, a series of cylindrically-shaped elongated connecting members extending through and rotatably mounted within round openings in said frame, said connecting mem bers having at their outer ends enlarged head 7 portions and at their inner ends a cross bore for connecting said members with said flexible base member. 7

In testimony whereof I afiix my signature.

JACOB KRONHEIM. 

